What are the three observations of natural selection?
a. Species change and adapt based on environmental pressure, individuals change
within their lifetime, and offspring inherit the changes.
b. Genetic drift, gene flow, and mutations provide the change necessary in populations
that affect future generations.
c. Organisms produce more offspring than survive, populations vary, and traits are
inherited.
d. The number of adults tends to remain the same over time, inheritance provides all of
the genetic variation needed for future generations, and natural selection works on only
the best of those adults in each generation.
A hominid fossil that has a long, low skull, projecting face and occipital bone, and large
nasal aperture is likely:
a. to be classified as having modern characteristics.
b. to be classified as having australopithecine characteristics.
c. to be classified as having archaic characteristics.
d. to be classified as having apelike characteristics.
Zoonosis is: